// If we know the location of the asset server, redirect to it when / is requested
// and the Accept header supports text/html
func assetServerRedirect(handler http.Handler, assetPublicURL string) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
if req.URL.Path == "/" {
if httprequest.PrefersHTML(req) {
http.Redirect(w, req, assetPublicURL, http.StatusFound)
}
}
// Dispatch to the next handler
handler.ServeHTTP(w, req)
})
}
func (p *ErrorPage) GrantError(err error, w http.ResponseWriter, req *http.Request) (bool, error) {
glog.Errorf("GrantError: %v", err)
// Only render html error pages for browser-like things
if !httprequest.PrefersHTML(req) {
return false, err
}
errorData := ErrorData{}
errorData.ErrorCode = GrantErrorCode(err)
errorData.Error = GrantErrorMessage(errorData.ErrorCode)
p.render.Render(errorData, w, req)
return true, nil
}